{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00015_017.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Birmingham, Alabama | 1950 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"101"},{"label":"placed","value":"77"},{"label":"unplaced","value":"24"},{"label":"fit sources","value":"georef-snap 37, georef 30, snap:0 7, georef-street 2, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 33.52187,-86.76497 +/-263m); p409 (tier 1, 33.53936,-86.79543 +/-136m); p411 (tier 1, 33.54074,-86.77004 +/-266m); p414 (tier 1, 33.53072,-86.77084 +/-210m); p417 (tier 1, 33.51854,-86.77710 +/-292m); p418 (tier 2, 33.52752,-86.77456 +/-764m); p419 (tier 1, 33.53867,-86.77082 +/-262m); p420 (tier 1, 33.53705,-86.76289 +/-265m); p421 (tier 1, 33.53163,-86.77012 +/-134m); p422 (tier 1, 33.53653,-86.76460 +/-259m); p423 (tier 1, 33.53708,-86.76562 +/-255m); p442 (tier 1, 33.53974,-86.77848 +/-278m); p445__1 (tier 2, 33.53881,-86.77847 +/-2020m); p445__2 (tier 2, 33.53881,-86.77847 +/-2020m); p446 (tier 1, 33.51606,-86.77942 +/-269m); p447 (tier 1, 33.53453,-86.79305 +/-267m); p448__2 (tier 1, 33.52362,-86.78927 +/-203m); p449 (tier 2, 33.53617,-86.78790 +/-1929m); p451 (tier 2, 33.53144,-86.77963 +/-2699m); p463 (tier 2, 33.52872,-86.78225 +/-2596m); p468 (tier 1, 33.54092,-86.78130 +/-265m); p473 (tier 1, 33.51624,-86.78334 +/-266m); p494 (tier 1, 33.51247,-86.76801 +/-267m); p496__2 (tier 1, 33.52352,-86.76230 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0401/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p401","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0401/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0401","type":"ImageService3","width":1749,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"174.8,0.0 173.8,159.6 1360.1,154.1 1419.7,383.6 1437.2,582.6 1431.9,1592.1 1749.0,1597.3 1749.0,2028.7 -0.0,2034.0 -0.0,-0.0 174.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0401/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1063.0,1887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.782838,33.518209]}},{"type":"Feature","properties":{"resourceCoords":[327.0,1305.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.78681,33.518726]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0402/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p402","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0402/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0402","type":"ImageService3","width":1727,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.4,177.3 617.2,178.2 617.6,99.5 753.3,178.5 1727.0,180.1 1727.0,1313.8 1512.3,1313.7 1513.7,1893.2 491.1,1892.7 491.6,1865.5 445.7,1865.2 445.1,1609.2 129.7,1602.8 132.9,602.3 115.1,405.0 55.4,177.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0402/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78596435126232,33.52457909585409]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77950136350286,33.52765071163433]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77520503702665,33.521279028444624]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78166802478611,33.51820741266438]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0403/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p403","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0403/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0403","type":"ImageService3","width":1742,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.8,1873.7 146.7,1296.8 -0.0,1296.5 -0.0,138.2 1637.8,145.9 1629.8,1880.8 1398.7,1879.0 1399.8,2031.4 680.8,2034.0 655.3,1874.1 145.8,1873.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0403/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77766883049655,33.52335848232065]}},{"type":"Feature","properties":{"resourceCoords":[1742.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77441106006852,33.5249150054125]}},{"type":"Feature","properties":{"resourceCoords":[1742.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77224619174184,33.52172162869834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77550396216988,33.52016510560649]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0404/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p404","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"14"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0404/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0404","type":"ImageService3","width":1727,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"252.7,0.0 1723.2,0.0 1723.1,131.2 1186.0,129.6 1159.6,1878.5 1339.9,1879.9 1265.4,2028.0 -0.0,2028.0 -0.0,1874.3 232.1,1876.5 252.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0404/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[239.0,1584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.772919,33.522322]}},{"type":"Feature","properties":{"resourceCoords":[984.0,129.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.773089,33.525244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0405/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p405","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0405/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0405","type":"ImageService3","width":1745,"height":2026},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"426.5,2026.0 436.4,1884.3 -0.0,1888.8 -0.0,113.0 547.3,109.6 545.8,0.0 1706.4,0.0 1698.6,93.6 1442.2,104.1 1456.1,670.2 1745.0,676.6 1745.0,717.5 1485.5,719.8 1497.3,1713.2 1745.0,1680.5 1745.0,1953.4 1221.9,2026.0 426.5,2026.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0405/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77282837186067,33.52559733073145]}},{"type":"Feature","properties":{"resourceCoords":[1745.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76962479316315,33.52710023761227]}},{"type":"Feature","properties":{"resourceCoords":[1745.0,2026.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76754633993653,33.52397764567667]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2026.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77074991863405,33.52247473879586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0406/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p406","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0406/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0406","type":"ImageService3","width":1727,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1666.9,1832.1 82.5,1904.3 69.4,1651.8 -0.0,1646.8 -0.0,438.1 1114.4,442.9 1325.5,-0.0 1727.0,-0.0 1727.0,1587.5 1632.0,1588.5 1666.9,1832.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0406/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76658694855847,33.528440285790474]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7648247170477,33.525721296650076]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.768627961494,33.523984026242026]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77039019300477,33.526703015382424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0407/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p407","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"10"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0407/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0407","type":"ImageService3","width":1731,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"435.1,0.0 1611.8,0.0 1623.0,1737.0 427.8,1735.4 435.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0407/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[889.0,1448.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.776153,33.524391]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1737.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7744505,33.5245928]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0408/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p408","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0408/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0408","type":"ImageService3","width":1727,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"233.7,0.0 1727.0,0.0 1727.0,1642.7 236.8,1643.9 233.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0408/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[978.0,1774.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.773089,33.525244]}},{"type":"Feature","properties":{"resourceCoords":[237.0,1774.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7744505,33.5245928]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0410/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p410","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0410/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0410","type":"ImageService3","width":1727,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1686.0 -0.0,165.9 159.6,164.2 157.1,0.0 1435.2,0.0 1423.0,1702.3 -0.0,1686.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0410/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[175.0,824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.770637,33.528376]}},{"type":"Feature","properties":{"resourceCoords":[204.0,1776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.769614,33.526916]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0412/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p412","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0412/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0412","type":"ImageService3","width":1724,"height":2021},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1724.0,0.0 1724.0,2021.0 1626.0,2021.0 1615.8,1697.7 119.0,1735.9 118.5,1722.3 -0.0,1724.8 -0.0,-0.0 1724.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0412/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77827864029108,33.5299159202286]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77507444107746,33.53135891713448]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77305941833572,33.528205633321434]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77626361754933,33.526762636415555]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0413/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p413","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0413/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0413","type":"ImageService3","width":1736,"height":2024},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2024.0 -0.0,-0.0 1736.0,0.0 1736.0,1703.3 1526.8,1701.1 1530.4,2024.0 -0.0,2024.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0413/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77383671701635,33.53032267658565]}},{"type":"Feature","properties":{"resourceCoords":[1736.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77220021617204,33.53108365078309]}},{"type":"Feature","properties":{"resourceCoords":[1736.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77114334726667,33.529481930706865]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77277984811099,33.528720956509424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0415/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p415","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"16"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0415/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0415","type":"ImageService3","width":1731,"height":2024},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1731.0,2024.0 -0.0,2024.0 0.0,-0.0 1575.9,-0.0 1574.0,194.3 1731.0,194.7 1731.0,2024.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0415/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[474.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.78112,33.53069]}},{"type":"Feature","properties":{"resourceCoords":[1580.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7811098,33.5287169]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0416/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p416","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0416/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0416","type":"ImageService3","width":1721,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"828.0,175.0 828.9,94.2 1721.0,1621.1 1721.0,1932.6 1577.1,2015.0 138.2,2015.0 137.0,1835.0 -0.0,1831.1 -0.0,182.4 828.0,175.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0416/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[466.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7831973,33.527631]}},{"type":"Feature","properties":{"resourceCoords":[137.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7831885,33.5282256]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0424/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p424","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0424/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0424","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1722.0,0.0 1722.0,2015.0 1620.8,2015.0 1620.2,1844.3 106.8,1837.0 110.1,2015.0 -0.0,2015.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0424/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76411928898892,33.53435424397832]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76089095026417,33.5358989243831]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75873772912163,33.532727802722576]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76196606784639,33.5311831223178]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0425/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p425","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0425/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0425","type":"ImageService3","width":1734,"height":2017},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"106.8,1769.3 110.2,139.3 1651.9,146.2 1652.6,320.0 1734.0,320.0 1734.0,2017.0 1205.8,2017.0 1045.8,1565.3 253.2,1852.3 106.8,1769.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0425/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76230491846108,33.531677212715365]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75911313709933,33.533203168881414]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,2017.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75699870538037,33.530086467899274]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2017.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76019048674212,33.528560511733225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0426/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p426","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0426/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0426","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"252.6,1769.4 218.1,1506.5 540.8,1504.8 844.2,1226.3 379.0,471.5 -0.0,400.1 -0.0,126.8 48.9,0.0 249.8,0.0 781.2,190.2 890.0,315.6 1722.0,310.0 1722.0,2015.0 -0.0,2015.0 252.6,1769.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0426/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76165854687218,33.528196231746676]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75924236888675,33.53054383785821]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75597010308127,33.52817033703275]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7583862810667,33.52582273092121]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0427/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p427","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0427/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0427","type":"ImageService3","width":1734,"height":2017},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2017.0 -0.0,554.8 158.1,546.2 1390.1,5.4 1435.7,78.2 1433.5,1486.9 1734.0,1473.1 1734.0,2017.0 -0.0,2017.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0427/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76485239142879,33.52737347459578]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76114347654145,33.527387402930614]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,2017.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76112417806199,33.523765501857994]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2017.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76483309294933,33.52375157352316]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0428/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p428","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0428/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0428","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"172.0,532.9 167.3,525.0 1050.0,83.5 1722.0,210.9 1722.0,626.1 1504.6,865.5 1722.0,1018.1 1722.0,2015.0 431.9,2015.0 433.4,1957.2 133.7,1938.9 172.0,532.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0428/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76218357621372,33.528193105040444]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75849637372701,33.52828650588892]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7583661876388,33.52466435082438]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7620533901255,33.5245709499759]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0429/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p429","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0429/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0429","type":"ImageService3","width":1739,"height":2024},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2024.0 -0.0,379.7 457.1,390.0 467.0,890.0 569.4,888.9 559.1,0.0 1557.6,0.0 1563.1,108.3 1739.0,109.1 1739.0,2024.0 -0.0,2024.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0429/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7680619826289,33.53913273588417]}},{"type":"Feature","properties":{"resourceCoords":[1739.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76428895583872,33.539085225362285]}},{"type":"Feature","properties":{"resourceCoords":[1739.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76435483181456,33.53539906282842]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76812785860473,33.5354465733503]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0430/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p430","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"14"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0430/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0430","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"550.5,348.4 898.5,0.0 1423.8,0.0 1426.5,97.8 1722.0,97.0 1722.0,2015.0 321.0,2015.0 337.3,345.3 550.5,348.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0430/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[641.0,87.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7636261,33.5393541]}},{"type":"Feature","properties":{"resourceCoords":[431.0,997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7640951,33.5376985]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0431/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p431","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0431/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0431","type":"ImageService3","width":1728,"height":2019},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"628.3,974.6 408.2,976.0 510.2,918.1 509.4,878.2 -0.0,863.1 -0.0,366.1 108.4,366.9 113.1,692.6 758.0,702.3 567.2,370.5 1642.3,379.1 1666.5,2019.0 634.9,2019.0 628.3,974.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0431/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76814127537418,33.54277327008219]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76451096657959,33.542743741767275]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2019.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7645520701583,33.53918343223035]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2019.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76818237895289,33.53921296054527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0432/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p432","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0432/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0432","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.4,2015.0 107.8,1906.6 -0.0,1907.1 -0.0,1855.8 106.6,1854.8 63.0,0.0 598.3,0.0 598.7,258.2 1583.0,264.6 1588.5,399.6 1680.0,399.1 1677.9,0.0 1722.0,0.0 1722.0,1745.3 1386.1,1751.2 1381.8,1653.2 852.3,1661.0 506.5,2015.0 110.4,2015.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0432/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76483789578405,33.54256093086038]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76110749178021,33.5424991987613]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7611935509187,33.53883521343544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76492395492255,33.538896945534525]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0433/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p433","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0433/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0433","type":"ImageService3","width":1728,"height":2019},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1606.1,1240.6 1606.8,1478.8 1688.2,1478.8 1698.8,2019.0 93.3,2019.0 128.9,1800.9 104.9,595.5 1723.6,602.2 1728.0,1241.0 1606.1,1240.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0433/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76827289278872,33.5457724152238]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.764559553305,33.545717530053906]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2019.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76463595543352,33.54207587025424]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2019.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76834929491724,33.54213075542413]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0434/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p434","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0434/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0434","type":"ImageService3","width":1722,"height":2015},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"628.1,1577.9 85.7,1602.1 81.8,1327.5 -0.0,1327.3 -0.0,1087.9 122.5,1088.7 125.8,41.4 1255.4,43.6 1497.0,220.6 1608.6,242.4 1606.9,0.0 1722.0,0.0 1722.0,2015.0 1629.3,2015.0 1624.4,1878.2 627.1,1866.5 628.1,1577.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0434/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76483467789845,33.5454359678994]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76115299302606,33.54539105176501]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76121561161116,33.541775042437536]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2015.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76489729648355,33.54181995857193]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0435/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p435","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0435/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0435","type":"ImageService3","width":1728,"height":2002},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1534.7 -0.0,125.8 940.3,119.8 1641.8,697.6 1728.0,1578.9 1728.0,1837.2 1728.0,1940.2 1424.8,2002.0 1363.3,2002.0 1314.5,2002.0 -0.0,1722.3 -0.0,1534.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0435/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7720557,33.5431101]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7686797,33.5446813]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2002.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76649570000001,33.5414212]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2002.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7698717,33.53985]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0436/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p436","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"58"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0436/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0436","type":"ImageService3","width":1717,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.9,1852.8 142.0,466.7 -0.0,465.4 -0.0,171.8 142.0,453.2 142.1,71.6 959.8,87.6 963.5,0.0 1717.0,0.0 1717.0,2010.0 1612.0,2010.0 1607.8,1493.6 1398.3,1475.6 1139.2,1477.5 1135.0,1837.2 141.9,1852.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0436/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,1552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7701849,33.5383157]}},{"type":"Feature","properties":{"resourceCoords":[142.0,312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.770176,33.540503]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0437/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p437","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0437/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0437","type":"ImageService3","width":1728,"height":2002},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,108.1 1626.0,103.0 1666.3,2002.0 -0.0,2002.0 -0.0,108.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0437/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[645.0,103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77125,33.5371735]}},{"type":"Feature","properties":{"resourceCoords":[1626.0,103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77019,33.537153]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0438/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p438","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0438/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0438","type":"ImageService3","width":1717,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1717.0,2010.0 -0.0,2010.0 -0.0,1314.0 130.2,1318.5 149.4,0.0 1142.1,0.0 1106.0,1327.5 1717.0,1344.2 1717.0,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0438/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77050363776348,33.537781855677274]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76686845005221,33.537819069408386]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76681655192621,33.53424691761561]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77045173963748,33.5342097038845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0439/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p439","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0439/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0439","type":"ImageService3","width":1728,"height":2006},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"733.4,176.3 1121.0,15.5 1124.9,407.9 1656.7,419.8 1660.9,2006.0 -0.0,2006.0 0.0,-0.0 253.2,0.0 231.6,207.6 733.4,176.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0439/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77692410417225,33.54060873968067]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77325757955226,33.54056694600952]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2006.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77331538012474,33.536994157014504]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2006.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77698190474473,33.537035950685656]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0440/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p440","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"17"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0440/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0440","type":"ImageService3","width":1717,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"793.5,2010.0 -0.0,2010.0 -0.0,1842.2 88.1,1842.2 85.3,249.8 269.2,249.3 295.3,0.0 1606.3,0.0 1622.1,1734.3 796.5,1728.1 793.5,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0440/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[878.0,255.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.771734,33.539794]}},{"type":"Feature","properties":{"resourceCoords":[1124.0,1729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77125,33.5371735]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0441/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p441","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"35"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0441/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0441","type":"ImageService3","width":1728,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"920.7,1528.7 528.0,1742.5 -0.0,1839.6 -0.0,-0.0 756.6,0.0 779.4,213.8 1728.0,116.1 1728.0,961.6 1728.0,1880.4 968.1,1946.8 920.7,1528.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0441/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1117.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.773973,33.541829]}},{"type":"Feature","properties":{"resourceCoords":[108.0,1825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7762234,33.5402226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0443/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p443","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0443/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0443","type":"ImageService3","width":1728,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1525.0,0.0 1521.9,1677.5 1329.2,1790.8 1452.7,2010.0 984.3,2010.0 998.4,1890.0 102.7,1878.1 104.0,1677.5 -0.0,1665.4 -0.0,-0.0 1525.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0443/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77473652394958,33.54609562360145]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77107021019967,33.54609386663745]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77107264508258,33.54251439398167]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7747389588325,33.54251615094567]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0444/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p444","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0444/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0444","type":"ImageService3","width":1717,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1575.6,963.0 1582.4,1649.0 932.5,1964.4 652.6,1471.9 -0.0,1836.8 0.0,0.0 1514.2,0.0 1495.4,961.4 1575.6,963.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0444/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7714997390418,33.546460239576604]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76776489662885,33.546452498266966]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76777569364693,33.542782765694994]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77151053605988,33.54279050700463]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0448__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p448 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6856.0"},{"label":"split_canvas_h","value":"8040.0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0448__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0448","type":"ImageService3","width":1714,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1919.7 1714.0,1901.6 1714.0,928.6 1667.7,879.8 1714.0,883.6 1714.0,778.6 1099.4,771.1 1017.3,770.0 1017.5,698.3 1019.8,0.0 -0.0,-0.0 -0.0,1919.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0448__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[867.0,1615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7871269,33.5245285]}},{"type":"Feature","properties":{"resourceCoords":[497.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.79187,33.52886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0450/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p450","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0450/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0450","type":"ImageService3","width":1714,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1714.0,2010.0 416.1,2010.0 165.2,1673.1 206.8,1653.1 -0.0,1300.6 -0.0,231.3 259.3,77.2 516.8,498.3 1093.8,140.6 1156.2,245.2 1562.1,0.0 1714.0,0.0 1714.0,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0450/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1176.0,1131.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7811175,33.5301994]}},{"type":"Feature","properties":{"resourceCoords":[1517.0,984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7795994,33.5307125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0452/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p452","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0452/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0452","type":"ImageService3","width":1706,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1374.1,476.9 1380.0,1356.8 1706.0,1356.1 1706.0,2010.0 -0.0,2010.0 -0.0,0.0 1706.0,0.0 1706.0,474.7 1374.1,476.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0452/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78939169706909,33.536246777671245]}},{"type":"Feature","properties":{"resourceCoords":[1706.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78620709217586,33.53774310864954]}},{"type":"Feature","properties":{"resourceCoords":[1706.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78410687333442,33.53459352798148]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78729147822766,33.53309719700318]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0453/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p453","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0453/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0453","type":"ImageService3","width":1716,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"191.2,1003.9 518.4,1006.9 525.8,539.0 -0.0,530.7 -0.0,286.6 734.4,306.6 735.0,126.8 1263.9,140.7 1267.9,321.1 1716.0,333.3 1716.0,1892.3 183.2,1871.2 191.2,1003.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0453/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7877814793204,33.53811120803511]}},{"type":"Feature","properties":{"resourceCoords":[1716.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78456095426826,33.53968129696546]}},{"type":"Feature","properties":{"resourceCoords":[1716.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78237218635935,33.53651797009176]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7855927114115,33.53494788116141]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0454/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p454","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0454/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0454","type":"ImageService3","width":1708,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"958.4,129.0 1511.8,128.3 1498.0,1893.0 329.0,1893.9 317.2,332.0 962.1,340.9 958.4,129.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0454/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[430.0,1893.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.782308,33.536792]}},{"type":"Feature","properties":{"resourceCoords":[1498.0,1893.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.780285,33.537748]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0455/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p455","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0455/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0455","type":"ImageService3","width":1714,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"524.5,332.2 1588.1,351.6 1578.7,1242.1 1422.2,1240.2 1413.5,2008.0 -0.0,2008.0 -0.0,984.1 512.2,993.6 524.5,332.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0455/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78610188150991,33.53565732387568]}},{"type":"Feature","properties":{"resourceCoords":[1714.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78297327368351,33.53719238704257]}},{"type":"Feature","properties":{"resourceCoords":[1714.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78083090623947,33.534115658360086]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78395951406587,33.532580595193195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0456/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p456","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0456/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0456","type":"ImageService3","width":1708,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"152.8,136.3 1507.4,140.4 1521.8,981.1 1708.0,974.0 1708.0,2010.0 -0.0,2010.0 -0.0,1009.4 153.4,1009.5 152.8,136.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0456/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78325977261407,33.53661869985289]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78005881484341,33.53814857580158]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77791402983593,33.53498652546826]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78111498760659,33.53345664951957]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0457/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p457","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0457/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0457","type":"ImageService3","width":1717,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2008.0 0.0,-0.0 891.4,0.0 905.3,1022.4 1631.6,1014.1 1632.1,1123.0 1717.0,1122.0 1717.0,2008.0 -0.0,2008.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0457/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.80150760909669,33.537124841027726]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79825032660987,33.53863604503497]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79614494130425,33.53543837417018]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79940222379106,33.53392717016294]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0458/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p458","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0458/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0458","type":"ImageService3","width":1708,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2010.0 -0.0,222.9 78.8,291.8 549.0,311.4 658.4,250.8 684.5,0.0 1708.0,0.0 1708.0,2010.0 -0.0,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0458/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79608938411161,33.537485507046775]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7929067655794,33.53902088318042]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79075424327714,33.53587698773096]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79393686180934,33.53434161159731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0459/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p459","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0459/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0459","type":"ImageService3","width":1717,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"959.6,1898.3 227.8,1898.2 225.8,868.1 -0.0,865.5 -0.0,106.8 221.6,106.0 223.8,0.0 1268.1,0.0 1217.8,85.5 1507.4,11.5 1517.0,2008.0 958.8,2008.0 959.6,1898.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0459/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.80116168064114,33.53907143383971]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79794910692725,33.5406030167904]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79581524793622,33.537449357774]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79902782165011,33.53591777482331]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0460/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p460","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0460/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0460","type":"ImageService3","width":1708,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1465.6 180.0,160.3 1144.3,0.0 1708.0,0.0 1708.0,1401.8 258.9,2010.0 -0.0,2010.0 -0.0,1465.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0460/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.798094041181,33.53940924565025]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79492161577267,33.5409713717956]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79273156323899,33.53783758554792]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79590398864732,33.53627545940257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0461/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p461","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0461/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0461","type":"ImageService3","width":1717,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2008.0 -0.0,-0.0 1471.8,0.0 1489.7,1484.5 1058.7,1744.9 1029.5,1734.8 1067.8,1801.4 968.7,1861.8 1062.8,2008.0 -0.0,2008.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0461/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.80500595270986,33.54568935938922]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7976436231443,33.54552347830464]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79787474617176,33.53829651699925]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.80523707573732,33.53846239808384]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0462/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p462","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0462/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0462","type":"ImageService3","width":1708,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"694.5,1756.8 597.1,1831.7 282.6,1904.8 105.8,1610.9 -0.0,1715.8 -0.0,-0.0 1708.0,0.0 1708.0,578.3 1582.3,649.2 1579.3,689.6 1708.0,914.5 1708.0,2010.0 1390.1,2010.0 1367.8,1972.5 1304.8,2010.0 1238.2,2010.0 893.0,1441.0 656.8,1584.2 694.5,1756.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0462/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79868313089223,33.54623749732608]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79131369022424,33.546146411945394]}},{"type":"Feature","properties":{"resourceCoords":[1708.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79144139584707,33.538867112802706]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2010.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79881083651506,33.538958198183394]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0464/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p464","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0464/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0464","type":"ImageService3","width":1718,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2010.0 -0.0,34.3 22.9,0.0 1560.8,0.0 1581.9,1897.8 1300.0,1902.0 1305.0,2010.0 746.7,2010.0 742.8,1918.0 473.6,1918.2 475.3,2010.0 -0.0,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0464/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1308.0,1009.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7850074,33.5428534]}},{"type":"Feature","properties":{"resourceCoords":[1575.0,1009.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.784007,33.543311]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0465/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p465","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0465/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0465","type":"ImageService3","width":1717,"height":2008},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1574.8,1882.0 188.8,1890.0 181.4,124.3 735.0,118.0 735.8,270.4 1353.2,266.5 1356.8,1001.8 1571.4,1000.5 1574.8,1882.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0465/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78447576269087,33.54334741448886]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78126629913432,33.544848991515806]}},{"type":"Feature","properties":{"resourceCoords":[1717.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77917414214129,33.54169854130738]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2008.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78238360569785,33.54019696428044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0466/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p466","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0466/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0466","type":"ImageService3","width":1718,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"214.7,988.0 -0.0,989.5 -0.0,251.5 372.9,248.7 371.1,0.0 1718.0,0.0 1718.0,2010.0 591.4,2010.0 602.0,1769.9 545.6,1870.6 213.8,1872.9 214.7,988.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0466/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1047.0,982.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.778945,33.543888]}},{"type":"Feature","properties":{"resourceCoords":[488.0,1871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7790604,33.5420141]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0467/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p467","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0467/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0467","type":"ImageService3","width":1721,"height":2009},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.9,1862.3 216.1,0.0 1721.0,0.0 1721.0,2009.0 752.9,2009.0 754.0,1859.5 212.9,1862.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0467/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[754.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.783925,33.545189]}},{"type":"Feature","properties":{"resourceCoords":[754.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.782979,33.543805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0469/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p469","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0469/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0469","type":"ImageService3","width":1721,"height":2009},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"955.6,1821.5 955.5,1768.0 -0.0,1742.8 -0.0,0.0 1721.0,0.0 1721.0,1829.7 955.6,1821.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0469/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.79342292351991,33.55018716446435]}},{"type":"Feature","properties":{"resourceCoords":[1721.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78709007369098,33.553268710858354]}},{"type":"Feature","properties":{"resourceCoords":[1721.0,2009.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78280408855632,33.54706408822504]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2009.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78913693838525,33.54398254183104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0470/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p470","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0470/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0470","type":"ImageService3","width":1718,"height":2013},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2013.0 0.0,0.0 1718.0,0.0 1718.0,2013.0 -0.0,2013.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0470/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78584941833795,33.5524700950847]}},{"type":"Feature","properties":{"resourceCoords":[1718.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78275958827228,33.55403206768858]}},{"type":"Feature","properties":{"resourceCoords":[1718.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78057891147273,33.550993576825135]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78366874153839,33.549431604221255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0471/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p471","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0471/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0471","type":"ImageService3","width":1721,"height":2009},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1721.0,0.0 1721.0,2009.0 1665.3,2009.0 1663.6,1777.2 1605.8,1777.7 1607.5,1900.3 1551.3,1889.7 1429.3,1801.0 861.7,1804.0 862.6,2009.0 -0.0,2009.0 0.0,0.0 1721.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0471/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[215.0,1682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.767307,33.545841]}},{"type":"Feature","properties":{"resourceCoords":[1593.0,1085.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.761389,33.547851]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p472 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6872.0"},{"label":"split_canvas_h","value":"8080.0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472","type":"ImageService3","width":1718,"height":2020},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.8,1866.6 634.9,1819.1 653.6,2020.0 839.5,2020.0 1104.3,1281.3 1100.1,1034.1 1199.3,1034.1 1718.0,1034.1 1718.0,27.3 1668.7,125.2 38.3,208.3 103.6,1775.6 123.8,1866.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1614.0,128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7790604,33.5420141]}},{"type":"Feature","properties":{"resourceCoords":[1199.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7789956,33.5401719]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p472 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3358.0"},{"label":"split_canvas_y","value":"4136.4"},{"label":"split_canvas_w","value":"3514.0"},{"label":"split_canvas_h","value":"3943.6"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472","type":"ImageService3","width":1718,"height":2020},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1718.0,1034.1 1199.3,1034.1 1123.0,1034.1 1075.9,2020.0 1718.0,2020.0 1718.0,1034.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0472__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1101.3,2301.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.779029,33.536074]}},{"type":"Feature","properties":{"resourceCoords":[1101.3,1083.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.780285,33.537748]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0474/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p474","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0474/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0474","type":"ImageService3","width":1722,"height":2021},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1457.8,405.2 1442.0,1921.3 855.5,1920.2 854.9,2021.0 374.2,2021.0 375.6,1786.3 124.2,1788.2 123.2,1435.3 -0.0,1434.5 -0.0,392.6 1457.8,405.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0474/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78317573770141,33.51825656064961]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77997399638812,33.51979508826685]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77782336683383,33.51664013987531]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78102510814712,33.51510161225807]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0475/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p475","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0475/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0475","type":"ImageService3","width":1729,"height":2009},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2009.0 0.0,-0.0 1610.7,0.0 1603.9,1927.0 1496.6,1925.6 1497.4,2009.0 -0.0,2009.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0475/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[145.0,705.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7834177,33.513712]}},{"type":"Feature","properties":{"resourceCoords":[145.0,1421.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7826499,33.5125845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0476/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p476","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0476/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0476","type":"ImageService3","width":1722,"height":2021},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.2,86.8 378.0,87.3 374.4,323.2 857.5,327.7 859.0,226.3 1140.7,229.5 1158.5,2021.0 -0.0,2021.0 -0.0,1670.2 109.1,1685.4 125.2,86.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0476/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78136584869846,33.515596947914744]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77819767765325,33.517152507206774]}},{"type":"Feature","properties":{"resourceCoords":[1722.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77602330310434,33.5140305484119]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2021.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77919147414954,33.51247498911987]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0477/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p477","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0477/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0477","type":"ImageService3","width":1736,"height":2013},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1605.4,46.4 1599.5,1571.2 1736.0,1566.7 1736.0,1693.6 1581.5,1609.1 1575.2,2013.0 272.9,2013.0 265.1,1620.0 149.2,1620.5 145.8,1837.2 -0.0,1855.1 -0.0,341.7 34.3,341.2 31.6,0.0 123.1,0.0 122.2,54.1 1605.4,46.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0477/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.78040456404763,33.519483518315404]}},{"type":"Feature","properties":{"resourceCoords":[1736.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77712996123178,33.521019099541356]}},{"type":"Feature","properties":{"resourceCoords":[1736.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77500915914935,33.51783109162129]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7782837619652,33.51629551039534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0478/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p478","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0478/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0478","type":"ImageService3","width":1734,"height":2025},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"290.8,65.1 990.0,68.7 986.6,642.6 1493.4,642.8 1539.5,934.1 1187.5,1567.2 686.1,1583.6 568.1,1803.3 405.6,1712.5 406.8,1585.7 270.4,1588.9 290.8,65.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0478/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77794397297889,33.52067186575663]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7746874126097,33.522233162790876]}},{"type":"Feature","properties":{"resourceCoords":[1734.0,2025.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77251570760762,33.51904018641482]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2025.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77577226797682,33.51747888938058]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0479/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p479","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"19"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0479/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0479","type":"ImageService3","width":1743,"height":2019},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1361.9,1617.4 1226.4,1914.1 869.4,1905.7 804.0,2019.0 -0.0,2019.0 -0.0,360.1 407.4,351.1 416.3,155.9 521.4,156.3 517.8,513.5 891.5,522.4 1361.9,1617.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0479/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[411.0,611.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77787,33.516261]}},{"type":"Feature","properties":{"resourceCoords":[206.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7767978,33.5139574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0480/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p480","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0480/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0480","type":"ImageService3","width":1728,"height":2025},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"540.5,2025.0 483.8,1840.0 479.8,1566.3 -0.0,1799.1 -0.0,467.6 198.8,358.9 12.1,0.0 375.1,0.0 381.4,381.5 805.7,374.6 802.0,247.4 1172.9,0.0 1728.0,0.0 1728.0,2025.0 540.5,2025.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0480/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77575234472998,33.51833387628498]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77202467361235,33.51836202737638]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,2025.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77198538207188,33.51469430590065]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2025.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7757130531895,33.51466615480925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0481/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p481","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0481/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0481","type":"ImageService3","width":1740,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"381.1,204.8 760.5,0.0 1740.0,0.0 1740.0,2012.0 1408.2,2012.0 1414.5,1633.4 850.3,1623.0 442.1,1878.1 443.7,2012.0 -0.0,2012.0 -0.0,1347.0 454.8,1081.0 465.5,316.4 381.1,204.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0481/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[836.0,1623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7732184,33.5183551]}},{"type":"Feature","properties":{"resourceCoords":[455.0,1081.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.774033,33.5192699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0482/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p482","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0482/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0482","type":"ImageService3","width":1727,"height":2023},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"892.0,488.8 889.1,0.0 962.4,0.0 964.5,211.8 1154.5,262.8 1176.5,198.5 1404.2,0.0 1727.0,0.0 1727.0,1332.3 1521.2,1377.0 1538.9,1684.3 562.5,1901.7 577.6,490.5 892.0,488.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0482/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77329624592734,33.51858649019554]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76953662650571,33.51864873370972]}},{"type":"Feature","properties":{"resourceCoords":[1727.0,2023.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7694497861938,33.5149511015577]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2023.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77320940561543,33.51488885804352]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0483/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p483","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0483/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0483","type":"ImageService3","width":1747,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1747.0,2012.0 -0.0,2012.0 -0.0,286.6 349.4,96.2 374.2,199.3 1365.9,203.6 1330.5,1705.8 1747.0,1715.7 1747.0,2012.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0483/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[385.0,1278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.774493,33.512746]}},{"type":"Feature","properties":{"resourceCoords":[385.0,370.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.774519,33.514369]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0484/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p484","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0484/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0484","type":"ImageService3","width":1729,"height":2024},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2024.0 -0.0,520.6 204.0,516.7 199.3,275.1 1190.6,20.5 1729.0,1099.7 1729.0,2024.0 1459.4,2024.0 1455.5,1903.7 740.9,1894.0 743.4,2024.0 -0.0,2024.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0484/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77240835028381,33.5156217830857]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76872711560493,33.51559000903713]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76877141490351,33.511971745133415]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2024.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77245264958239,33.51200351918198]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0485/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p485","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0485/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0485","type":"ImageService3","width":1751,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"505.3,1785.5 284.4,1272.5 276.9,1116.4 381.6,1094.7 388.3,418.2 224.4,416.6 107.8,516.3 96.2,548.8 -0.0,522.0 -0.0,0.0 205.4,0.0 213.0,288.7 974.4,269.3 1084.0,165.2 1240.8,262.5 1506.2,239.9 1507.8,187.1 1541.4,106.1 1636.3,0.0 1751.0,0.0 1751.0,640.2 1549.5,500.7 1399.6,733.1 1173.0,981.0 1173.0,1132.0 1251.2,1159.5 1343.5,1228.1 1440.1,1433.5 1456.8,1562.1 1433.7,1856.3 1234.8,1852.0 1109.3,1809.2 1096.1,2012.0 974.2,2012.0 825.4,1763.3 675.9,1767.5 811.8,2012.0 656.3,2012.0 505.3,1785.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0485/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77125370348435,33.52011244716789]}},{"type":"Feature","properties":{"resourceCoords":[1751.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76374890366901,33.52029864559874]}},{"type":"Feature","properties":{"resourceCoords":[1751.0,2012.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7634940791324,33.51305832917687]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2012.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77099887894774,33.51287213074602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0486/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p486","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0486/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0486","type":"ImageService3","width":1729,"height":2026},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"383.4,1906.5 365.8,1877.6 263.9,1942.0 -0.0,2023.8 -0.0,1691.9 231.0,1604.9 -0.0,1602.0 -0.0,601.6 352.8,613.1 353.6,672.5 486.7,675.0 495.3,218.6 624.7,408.2 779.4,404.9 639.1,164.6 787.7,157.4 940.9,401.5 1062.1,399.0 1071.0,197.1 1143.5,227.2 1310.3,246.6 1329.0,710.8 1729.0,695.0 1729.0,2026.0 752.1,2026.0 752.2,1986.2 727.2,1947.1 663.8,1924.4 383.4,1906.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0486/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77089443875606,33.514400173100974]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76344038489263,33.51445362211227]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2026.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76336579539506,33.50711957971223]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2026.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77081984925849,33.507066130700935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0487/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p487","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0487/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0487","type":"ImageService3","width":1752,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"456.9,1711.7 341.2,1517.0 156.6,1379.6 -0.0,1324.4 -0.0,1021.1 454.1,526.0 754.2,60.7 1351.7,474.4 1625.7,607.8 1752.0,979.8 1752.0,1657.2 518.5,1679.6 456.9,1711.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0487/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7661676073249,33.518543846481066]}},{"type":"Feature","properties":{"resourceCoords":[1752.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76241761081545,33.518638085452295]}},{"type":"Feature","properties":{"resourceCoords":[1752.0,2012.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76228871210901,33.51502231717658]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2012.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76603870861847,33.51492807820535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0488/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p488","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0488/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0488","type":"ImageService3","width":1735,"height":2029},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1100.0 167.7,1087.7 224.6,503.7 196.4,247.4 124.0,30.8 185.4,0.0 1630.8,0.0 1735.0,338.3 1735.0,2029.0 -0.0,2029.0 -0.0,1100.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0488/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7653521,33.5155371]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7615892,33.5156892]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2029.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7613758,33.512020199999995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2029.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.7651387,33.5118681]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0489/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p489","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0489/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0489","type":"ImageService3","width":1748,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,953.4 111.3,896.2 137.6,961.8 491.1,787.9 707.8,641.0 669.5,562.1 1385.0,220.2 1356.8,772.5 1564.3,783.1 1550.0,1022.8 1475.9,1584.0 1279.3,1580.3 1286.4,1997.0 1036.4,2012.0 881.0,1909.2 767.7,2012.0 -0.0,2012.0 -0.0,953.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0489/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1140.0,520.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7658135,33.5246027]}},{"type":"Feature","properties":{"resourceCoords":[783.0,739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.767278,33.523758]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0490/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p490","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0490/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0490","type":"ImageService3","width":1736,"height":2027},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"598.8,1315.1 525.9,1079.7 384.5,1017.6 278.0,936.4 309.4,206.0 179.4,200.4 135.6,230.9 66.8,316.9 24.6,407.8 20.3,467.9 -0.0,468.8 -0.0,-0.0 157.5,0.0 1509.4,167.0 1520.1,0.0 1736.0,0.0 1736.0,2027.0 765.8,2027.0 768.6,1910.2 713.6,1704.2 582.3,1701.1 598.8,1315.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0490/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[772.0,1909.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.761541,33.515048]}},{"type":"Feature","properties":{"resourceCoords":[552.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7628716,33.5208005]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0491/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p491","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"36"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0491/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0491","type":"ImageService3","width":1744,"height":2012},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.2,0.0 1324.8,0.0 1403.5,2012.0 -0.0,2012.0 -0.0,54.3 92.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0491/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[877.0,1775.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77677,33.503296]}},{"type":"Feature","properties":{"resourceCoords":[1201.0,570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.77556,33.506493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0492/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p492","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0492/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0492","type":"ImageService3","width":1735,"height":2027},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2027.0 -0.0,244.8 -0.0,244.8 0.0,0.0 1227.9,0.0 981.8,89.5 985.9,420.1 1247.7,335.3 1348.4,269.9 1366.2,298.5 1645.8,312.9 1719.3,343.7 1735.0,373.4 1735.0,2027.0 -0.0,2027.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0492/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77507976037077,33.50861517541886]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76757047576876,33.508590196408626]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2027.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76760522927722,33.50122331505877]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2027.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.77511451387923,33.50124829406901]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0493/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p493","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"22"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0493/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0493","type":"ImageService3","width":1756,"height":2017},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,104.9 325.8,681.9 998.1,302.2 1062.8,414.2 1569.6,117.3 1584.9,143.2 1756.0,42.1 1756.0,1676.1 1110.7,1646.8 1037.2,1670.6 1021.5,1684.3 1006.4,2017.0 -0.0,2017.0 -0.0,104.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0493/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1322.0,1579.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7780892,33.5083855]}},{"type":"Feature","properties":{"resourceCoords":[143.0,624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7830626,33.5117321]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0495/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p495","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0495/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0495","type":"ImageService3","width":1742,"height":2013},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1534.5,0.0 1558.9,1014.1 1615.4,1012.7 1629.2,1742.7 1341.2,1748.6 1245.3,1785.1 1245.0,1854.5 1294.8,1984.9 1488.5,1950.0 1571.2,2013.0 1068.2,2013.0 1065.5,1974.0 382.8,1922.2 309.7,1888.2 243.2,2013.0 226.1,2013.0 225.4,1850.5 -0.0,1744.2 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0495/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76975667973444,33.531725572140274]}},{"type":"Feature","properties":{"resourceCoords":[1742.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76330952370958,33.53464012739975]}},{"type":"Feature","properties":{"resourceCoords":[1742.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.75929754814743,33.5283859032259]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2013.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.76574470417229,33.52547134796643]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0496__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1950 | sanborn00015_017 p496 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"49"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6820.0"},{"label":"split_canvas_h","value":"8088.0"}],"created":"2026-09-21T14:30:27Z","modified":"2026-09-21T14:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0496__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0496","type":"ImageService3","width":1705,"height":2022},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"407.1,993.4 460.4,2010.9 1705.0,2022.0 1705.0,247.2 1476.5,259.9 1445.1,-0.0 541.1,0.0 542.0,301.5 14.3,300.1 48.1,1012.2 407.1,993.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g00015195004:00015_04_1950-0496__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2153.0,1665.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.7632107,33.5198177]}},{"type":"Feature","properties":{"resourceCoords":[828.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.76343,33.522886]}}]}}]}